How to find the cheapest flight from
Tri-Cities (PSC) to Illinois
How far in advance should I book a flight from Tri-Cities to Illinois?
Travelers have found it’s best to book a flight 37 days in advance to save up to 10% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 37 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Tri-Cities to Illinois 1-2 weeks in advance for as low as $177, or $177 for flights within the next 24 hours.
One-way flights to Illinois from Tri-Cities
The cheapest one-way flights from Tri-Cities to Illinois
5:04 am - 4:46 pm
Related info for your journey
Useful info, stats and facts about Tri-Cities to Illinois flights.
Arrival points for flights from Tri-Cities to Illinois
Destination information for Illinois
Things to know before you go. Useful info for your trip from Tri-Cities to Illinois